Don't do it! I have heard stories where the insured patients (usually with AIDS) can and do live far beyond the expected few years as per the prognosis. The doctors and improved medicines and easy access to medical trials allow longer survival rates than expected, even when everything is on the up and up. Plus you must worry about the long term solvency of the brokerage putting the financial product together, no matter what "guarantee".

Last but not least it may put you in the position of rooting for the death of policy holders. Some investors have been known to wait decades.